These might be a smidge too tight

SELECT * FROM gallery2 WHERE topic_id="160368" UNION SELECT * FROM gallery2 WHERE topic_id="1164543" UNION SELECT * FROM gallery2 WHERE topic_id="1331722" UNION SELECT * FROM gallery2 WHERE topic_id="727325" UNION SELECT * FROM gallery2 WHERE topic_id="865605" UNION SELECT * FROM gallery2 WHERE topic_id="12782" UNION SELECT * FROM gallery2 WHERE topic_id="1813771" UNION SELECT * FROM gallery2 WHERE topic_id="514760" UNION SELECT * FROM gallery2 WHERE topic_id="1391032" UNION SELECT * FROM gallery2 WHERE topic_id="547161" UNION SELECT * FROM gallery2 WHERE topic_id="1177212" UNION SELECT * FROM gallery2 WHERE topic_id="1743024" UNION SELECT * FROM gallery2 WHERE topic_id="1157356" UNION SELECT * FROM gallery2 WHERE topic_id="1457311" UNION SELECT * FROM gallery2 WHERE topic_id="1207344" UNION SELECT * FROM gallery2 WHERE topic_id="629815"